Diamondback 7.62x39mm 16" Carbine-Length Black Nitride Chrome Moly Vanadium Steel OEM Replacement Barrel

If you're rebuilding a Diamondback AR or need to swap to a different caliber platform, a Diamondback 7.62x39mm 16" carbine-length barrel gives you a straightforward OEM replacement path. This 16-inch barrel is built from 4150 chrome moly vanadium steel with a black nitride finish—a proven combination that balances durability, corrosion resistance, and practical weight for intermediate-range shooting, hunting, or defensive use. Whether you're converting an existing receiver or assembling a fresh build, this barrel handles the job without fuss.

The carbine length (16 inches overall) is the standard for modern AR platforms, offering a good compromise between velocity and handling. Black nitride finish protects against rust and wear while keeping a professional appearance. 7.62x39mm is the AK-world cartridge, and building an AR around it lets you take advantage of affordable ammunition and magazine compatibility if you already run that caliber elsewhere in your battery. Diamondback barrels are manufactured to consistent military specs, so you get predictable performance without surprises.

This is a straightforward component swap—no special tools or gunsmithing required if you have a barrel vise and torque wrench. It threads onto any AR receiver with the correct bore (7.62x39mm) and carbine-length gas system. Whether you're a builder who likes having spare barrels on hand or someone switching your existing rifle to a new caliber, a quality OEM barrel is the foundation for reliable shooting.

Key Features

• 7.62x39mm bore—compatible with affordable, widely available intermediate-rifle ammunition
• 16-inch carbine length—proven length for handling, velocity, and modular AR builds
• 4150 chrome moly vanadium steel—mil-spec material for strength and repeatability
• Black nitride finish—resists corrosion and wear in field conditions
• OEM Diamondback component—manufactured to consistent military specifications

Specifications

Frequently Asked Questions

What AR receivers does this barrel fit?

This barrel is threaded and designed for standard AR receivers that accept 7.62x39mm barrels with carbine-length gas tubes. Verify that your receiver is chambered or can accommodate 7.62x39mm before purchasing.

Is this barrel a drop-in replacement?

This is a barrel component that requires a vise, appropriate wrenching tools, and proper torque specification to remove and install safely. It is not a drop-in component; you will need a barrel vise and torque wrench to swap it properly.

What ammunition does 7.62x39mm fire?

7.62x39mm is the intermediate rifle cartridge used in AK-platform firearms and some AR-pattern builds. It is widely manufactured and relatively affordable, making it practical for range work and hunting in caliber-appropriate applications.

Why choose black nitride finish over other options?

Black nitride protects the steel from rust and corrosion while maintaining a low-profile appearance. It is a durable finish commonly used on mil-spec components and handles field conditions well without requiring special maintenance.